Toy building block



FIG. 1 is a top perspective view of a toy building block showing my new design;

FIG. 2 is a bottom perspective view of the toy building block shown in FIG. 1;

FIG. 3 is a top view of the toy building block shown in FIG. 1;

FIG. 4 is a first side view of the toy building block shown in FIG. 1;

FIG. 5 is a second side view of the toy building block shown in FIG. 1;

FIG. 6 is a third side view of the toy building block shown in FIG. 1;

FIG. 7 is a fourth side view of the toy building block shown in FIG. 1; and,

FIG. 8 is a bottom view of the toy building block shown in FIG. 1. 

CLAIM The ornamental design for a toy building block, as shown and described. 